1356518513 has 4 divisors (see below), whose sum is σ = 1550306880. Its totient is φ = 1162730148.

The previous prime is 1356518503. The next prime is 1356518539. The reversal of 1356518513 is 3158156531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3158156531 = 4111 ⋅768221.

It is a cyclic number.

It is not a de Polignac number, because 1356518513 - 2¹⁴ = 1356502129 is a prime.

It is a super-2 number, since 2×1356518513² = 3680284952223462338, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1356518503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96894173 + ... + 96894186.

It is an arithmetic number, because the mean of its divisors is an integer number (387576720).

Almost surely, 2^1356518513 is an apocalyptic number.

It is an amenable number.

1356518513 is a deficient number, since it is larger than the sum of its proper divisors (193788367).

1356518513 is an equidigital number, since it uses as much as digits as its factorization.

1356518513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193788366.

The product of its digits is 54000, while the sum is 38.

The square root of 1356518513 is about 36830.9450462515. The cubic root of 1356518513 is about 1106.9854391590.

The spelling of 1356518513 in words is "one billion, three hundred fifty-six million, five hundred eighteen thousand, five hundred thirteen".